Webster’s Revised Unabridged Dictionary · 1913
Mollusk
Mol′lusk (mŏl′lŭsk), n. [F. mollusque, L. mollusca a kind of soft nut with a thin shell, fr. molluscus soft, mollis soft. See Mollify.] (Zoöl.) One of the Mollusca. [Written also mollusc.]
Webster’s Revised Unabridged Dictionary · 1913
Mol′lusk (mŏl′lŭsk), n. [F. mollusque, L. mollusca a kind of soft nut with a thin shell, fr. molluscus soft, mollis soft. See Mollify.] (Zoöl.) One of the Mollusca. [Written also mollusc.]